6results about How to "Simple structure processing" patented technology

This utility model relates to the field of yarn feeder technology, and discloses a guide roller assembly and a yarn feeder for a high-speed, multi-path yarn feeder. The guide roller assembly includes a bearing B, a bearing A, a roller, a mandrel, an elastic washer, and fixing screws. Bearing B is a floating bearing. An O-ring is added to the mandrel at the location of the floating bearing B. By changing the depth of the groove of the O-ring and the matching of the O-ring wire diameter, suitable friction can be obtained, stabilizing the static state of the inner ring of the floating bearing B, avoiding wear between the inner ring of bearing B and the mandrel, and ensuring that the bearing is always in a normal working state. This guide roller assembly has a simple structure and stable improvement effect.

The application discloses a kind of patterning composite substrate and its preparation method, in the preparation method of the application, the edge is chamfered, and the etching rate of matching edge is slower, and the etching rate of matching center area is higher, solve the production problem caused by edge effect, and finally microstructure meeting process requirements can be obtained on the whole substrate, i.e. it can guarantee the crystallization quality of edge area GaN material growth, reduce the output of final qualified finished product core grain.The composite substrate of the application is formed with microstructure, and the high-quality growth of GaN material is facilitated.

The utility model relates to the vehicle body sealing technology, in particular to a frameless vehicle door sealing structure and a vehicle, the frameless vehicle door sealing structure comprises an A column exterior trimming panel assembly and a side wall bright strip, the A column exterior trimming panel assembly comprises an A column exterior trimming panel and an A column exterior trimming panel support, and the side wall bright strip comprises a top strip bright trimming strip connecting corner and a side wall bright trimming strip connecting corner. An inserting gap is formed between the corner of the A-column exterior trim panel and the A-column exterior trim panel support, the top strip bright trim panel connecting corner is suitable for being inserted into the inserting gap to extrude the A-column exterior trim panel to deform, the A-column exterior trim panel extrudes the side wall bright strip to deform, and therefore static interference sealing can be formed at the end of the A-column exterior trim panel assembly and the end of the side wall bright strip. The frameless vehicle door sealing structure is good in sealing and waterproof effect and easy to assemble, and the appearance quality is high after the side wall bright strip and the A column are sealed in a matched mode.

The invention provides a screw rod structure for a valve and a vehicle electronic expansion valve, and belongs to the technical field of vehicle parts, the screw rod structure comprises a screw rod part and a valve seat part, the valve seat part and the screw rod part are integrally formed, the valve seat part is located at the end of the screw rod part, a circulation hole is formed in the valve seat part, a circulation inlet is located in the circumferential wall of the valve seat part, and a circulation outlet is formed in the circumferential wall of the valve seat part; the circulation outlet is positioned at the end part of the valve seat part; the valve needle, the screw rod part and the circulation outlet are coaxially arranged, and the valve seat part is arranged to be capable of actively getting close to or getting away from the valve needle along with axial movement of the screw rod part; the expansion valve has the beneficial effects that the screw and valve seat integrated structure is provided, the structure is easy to machine, high precision can be achieved, the structure can be used in cooperation with the valve needle independently arranged in the expansion valve, and therefore the coaxiality of the valve needle and the valve seat is improved, the precision and sealing performance of flow control are improved, and the service life of the expansion valve is prolonged. And the processing difficulty of the electronic expansion valve is greatly reduced.

The utility model discloses a column-beam interlocking mechanism with a single body anti-falling function, which comprises a vertically arranged single body, and a cross beam is vertically arranged above the single body; the cross beam comprises an upper side plate and a lower side plate, and a plurality of clamping grooves are formed in the two sides of the upper side plate and the two sides of the lower side plate. Each single body comprises a telescopic section located at the lower part and a fixed section located at the upper part, a top plate is arranged at the upper part of the fixed section, and four column claws are uniformly distributed above the top plate; the column claws are used for being clamped in different clamping grooves so that the single bodies can be clamped to different positions of the cross beam. A hoop is mounted on the outer wall of the fixed section of the single body; the hoop is fixedly connected with one end of a chain, the other end of the chain is connected with an S-shaped hook, and the chain is used for passing through the single body, upwards bypassing the cross beam and then returning to the position near the hoop; the S-shaped hook is used for connecting two ends of the chain. The problems that an existing column-beam interlocking mechanism is low in strength and complex in construction are solved.

The utility model relates to the technical field of screw nut mechanism, specifically relates to planet roller screw pair and electric cylinder. Planet roller screw pair includes nut, screw and roller, and the axial both sides of thread section on roller are equipped with limit section respectively, the diameter of limit section is less than the diameter of thread section, and the thread section of roller is all screwed with nut and screw, and the thread rotation direction of nut is opposite with the thread rotation direction of roller, the part of limit section of roller and corresponding limit section of nut is equipped with the ring groove around the axis, the inner diameter of the part of nut and is equipped with ring groove is less than the inner diameter of its part and is equipped with thread, and the part between the ring groove of roller and the adjacent two ring grooves of nut cooperates to restrict roller, makes the revolution and rotation movement of roller around screw, and this structure is simple to process, and the technology is easy to realize, and it is favorable for reducing production manufacturing cost.